That's bullsh^^, plain and simple. I have probably a dozen, and no marked up scopes or anything else that's problematic. So do a lot of others who've commented.
You have zero, but you looked at a set once and feel you're qualified to comment. You're not.
Melvin Forbes uses them. Why don't you call him up and tell him he knows nothing about guns.
If you lap aluminum rings, you're more likely to mark up a scope IME.
